Research on improving the expression dimension of glacier landform using virtual reality technology
Glacier erosion and sedimentary landforms contain important ancient climate and environmental infor-mation,which are indicators for identifying the scope and nature of glacier action and provide a foundation for glacier dynamics research. After more than a hundred and fifty years of development,the expression research of glacier landforms has formed a relatively complete mapping scheme for glacier landforms,providing an impor-tant basis for determining the dynamic characteristics of the glacier formation process,glacier types,and glacia-tion. However,the professionalism of thematic maps of glacier landforms not only provides support for the re-construction of ancient glaciers and the study of ancient environments,but also increases the difficulty of inter-pretation for non-experts. The extended map expression mechanism based on virtual reality/augmented reality maps,hybrid reality maps,micro maps,semantic maps,and metaphorical maps provides more dimensional ex-pression solutions. On the basis of traditional spatial geometric dimensions,dimensions such as state and reader's perspective are added,providing a new perspective for glacier landform expression. This article uses virtual real-ity (VR) technology to construct an interactive three-dimensional glacier landform scene of the Karola Glacier West Gully,adding dimensions such as three-dimensional,dynamic,and reader's perspective. Based on previ-ous research work (sediment characteristics,dating,etc.),typical glacier landforms in the scene are annotated,and the research understanding of glacier landforms in the early stage is well matched with VR scenes. This scene can be freely transformed at 720 degrees,including 40 sub scenes from the Last Glacial Maximum to Late Glacier,Early Holocene,Neoglacial,Little Ice Age,and Modern Glacier,stimulating readers' immersion,in-teraction,and conceptualization. This study shows that VR and other technologies can provide a extended map style representation of glacier landforms in more dimensions,which will further promote the reconstruction of an-cient glaciers and the study of ancient climate and environment. It can provide good interactive three-dimension-al glacier geomorphology materials for glacier geomorphology teaching,science popularization,research,and academic exchange,which can assist readers in more accurate identification of glacier relics and understanding of glacier development conditions.
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